Environmental Science and Ecology - Mock Test 31

Question 301

The food chain, in which the microorganisms breakdown the energy-rich organic compounds prepared by the producers, is known as ?

A) Detritus food chain B) Predator food chain C) Parasitic food chain D) Ecosystem

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Question 302

Animals living at the bottom of the sea are known as ?

A) Lentic B) Pelagic C) Benthic D) Lotic

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Question 303

The maximum biomass occurs in ?

A) Tropical forests B) Temperate forests C) Taiga D) Alpine vegetation

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Question 304

Gradual and predictable changes in the species composition of a given area is ?

A) Primary succession B) Ecological succession C) Xerarch succession D) Secondary succession

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Question 305

The more abundant animals in a desert grassland are ?

A) Arboreal B) Diurnal C) Aquatic D) Fossorial

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Question 306

Hydrarch succession takes place in ?

A) Dry areas B) Wetter areas C) Bare area D) None of these

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Question 307

The most recently discovered ecosystem is ?

A) Vents B) Crater C) Tundra D) Floating iceberg

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Question 308

DDT residues are rapidly passed through food chain causing biomagnification because DDT is ?

A) Water soluble B) Lipo soluble C) Moderately toxic D) Non-toxic to aquatic animals

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Question 309

The nature’s cleaners are ?

A) Producers B) Consumers C) Decomposers and scavengers D) Symbionts

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Question 310

The remains of the dead plants and animals is called ?

A) Detritus B) Detritivores C) Humus D) Litter

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